Plastic & Rubber Component Manufacturing: Injection Molding Solutions
How CIC Delivers Precision Plastic Component Solutions
At Custom Industrials Company (CIC), our plastics manufacturing capabilities deliver precision injection molded components for industrial, medical, consumer, and specialty applications. Our plastic injection molding process produces tight-tolerance, complex plastic parts with consistent mechanical properties and excellent surface finish — offering an economical alternative to machined plastic parts and metal components where weight reduction, corrosion resistance, and design flexibility are priorities.
Our Capabilities
- Thermoplastic injection molding for complex, high-volume components
- Wide range of engineering resins including ABS, Nylon, Polycarbonate, PEEK, and more
- In-house tool design and mold fabrication capability
- Insert molding for metal-plastic composite components
- Overmolding for ergonomic grip and multi-material assemblies
- Full finishing including painting, assembly, and packaging
Industries We Serve
- Industrial Equipment and Machinery OEMs
- Medical Device and Healthcare Products
- Consumer and Commercial Products
- Automotive Interior and Underhood Components
- Electronic Enclosures and Housings
- Agricultural and Food Processing Equipment
Why Choose CIC?
- Single-source plastic component supply from design through delivery
- In-house mold design reduces tooling cost and lead time
- Broad resin expertise for demanding performance applications
- Insert molding for integrated metal-plastic assemblies
- Engineering support for resin selection and part design
- Competitive economics vs. machined plastic alternatives
Frequently Asked Questions
What plastic materials can CIC injection mold?
CIC injection molds a broad range of thermoplastics including ABS, Polycarbonate (PC), Nylon (PA6, PA66), Polypropylene (PP), Acetal (POM), PEEK, Ultem, glass-filled engineering grades, and specialty resins for high-temperature or chemical-resistance applications.
What is insert molding and can CIC do it?
Insert molding places metal inserts — such as threaded brass inserts, pins, or terminals — into the mold before injection, encapsulating them in the plastic part for superior pull-out and torque resistance compared to post-molded insertions. CIC offers insert molding for metal-plastic composite components.
What is the minimum production volume for injection molding to be economical?
Injection molding becomes economical at volumes of 1,000 pieces or more annually, though this varies with part complexity and tooling cost. CIC can advise on break-even points compared to machined or 3D-printed alternatives for your specific application.
Can CIC design and build the injection mold tooling?
Yes. CIC coordinates in-house mold design and tool fabrication, providing turnkey tooling and part supply under a single program. This simplifies management and aligns tooling investment with part quality expectations.
What tolerances are achievable in plastic injection molding?
Standard injection-molded dimensions hold ±.005" to ±.010" depending on wall thickness, material, and geometry. Critical features such as bore diameters and mating interfaces can be held to ±.002" with optimized tooling and process control.
Quality & Delivery Commitment
- First article inspection with full dimensional report
- Material certification for engineering and medical-grade resins
- Statistical process control in high-volume production
- Visual inspection for surface quality and cosmetic acceptance
- Functional testing for load-bearing and fit-critical components
- Complete quality documentation package
- RoHS and regulatory compliance documentation available
Experience the CIC Difference
Partner with Custom Industrials Company and benefit from:
- Single-source from mold design through part supply
- Broad engineering resin expertise
- Insert molding and overmolding capabilities
- Engineering support for resin selection and part design
- Competitive tooling and part pricing
- Responsive customer service and fast prototype delivery
- Quality documentation for medical and regulated applications
Contact our technical team today at 314-567-5847, or email us at rfq@cic-cic.solutions for expert guidance on your requirements.